/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.net.test;

import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.io.OutputStream;

class CompactObjectOutputStream extends ObjectOutputStream {

    static final int TYPE_FAT_DESCRIPTOR = 0;
    static final int TYPE_THIN_DESCRIPTOR = 1;

    CompactObjectOutputStream(OutputStream out) throws IOException {
        super(out);
    }

    
    protected void writeStreamHeader() throws IOException {
        writeByte(STREAM_VERSION);
    }

    
    protected void writeClassDescriptor(ObjectStreamClass desc) throws IOException {
        Class<?> clazz = desc.forClass();
        if (clazz.isPrimitive() || clazz.isArray() || clazz.isInterface() ||
            desc.getSerialVersionUID() == 0) {
            write(TYPE_FAT_DESCRIPTOR);
            super.writeClassDescriptor(desc);
        } else {
            write(TYPE_THIN_DESCRIPTOR);
            writeUTF(desc.getName());
        }
    }
}
